-ly b-u bbb bbi bbl bbm bbs bbt bbu bby bi- bib bii bil bim bis bit biu biy blb bli bll blm bls blt blu bly bmb bmi bml bmm bms bmt bmu bsb bsi bsl bsm bss bst bsu bsy btb bti btl btm bts btt btu bty bub bui bul bum bus but buu buy by- byi byl bym bys byt byu ibb ibi ibl ibm ibs ibt ibu iby iib iii iil iim iis iit iiu il- ilb ili ill ilm ils ilt ilu ily im- imb imi iml imm ims imt imu imy is- isb isi isl ism iss ist isu isy itb iti itl itm its itt itu ity iu- iub iui ium ius iut iym iys iyt iyy lbb lbi lbl lbm lbs lbt lbu lib lii lil lim lis lit liu llb lli lll llm lls llt llu lly lmb lmi lml lmm lms lmt lmu lsb lsi lsl lsm lss lst lsu ltb lti ltl ltm lts ltt ltu lub lui lul lum lus lut luu luy lyl lym lys lyt mbb mbi mbl mbm mbs mbt mbu mi- mib mii mil mim mis mit miu miy mlb mli mll mlm mls mlt mlu mmb mmi mml mmm mms mmt mmu msb msi msl msm mss mst msu msy mtb mti mtl mtm mts mtt mtu mub mui mul mum mus mut muu muy my- myb myl mym mys myt myu sbb sbi sbl sbm sbs sbt sbu sby sib sii sil sim sis sit siu slb sli sll slm sls slt slu sly smb smi sml smm sms smt smu smy ss- ssb ssi ssl ssm sss sst ssu stb sti stl stm sts stt stu sty sub sui sul sum sus sut suu suy sy- syb syi syl sym sys syt syu tbb tbi tbl tbm tbs tbt tbu tib tii til tim tis tit tiu tiy tli tll tlm tls tlt tlu tmb tmi tml tmm tms tmt tmu tmy tsb tsi tsl tsm tss tst tsu tsy ttb tti ttl ttm tts ttt ttu tty tub tui tul tum tus tut tuu tuy tyl tym tys tyt ubb ubi ubl ubs ubt ubu uby uib uii uil uim uis uit uiu ulb uli ull ulm uls ult ulu uly um- umb umi uml umm ums umt umu usb usi usl usm uss ust usu utb uti utl utm uts utt utu uty uum uus uut uuu uyi uys uyu ybi ybl ybm ybs yby yii yim yis yit yli yll ylm yls ylt yly ymi yml ymm yms ymt ysb ysi ysl ysm yss yst ysu ysy ytl ytm yts ytt ytu yui yul yum yus yut yuu yuy yyb yys yyt yyu yyy